MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 10/20/01 through 10/26/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 19,785 522,415
BIO88 3,548 55,632
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 640 7,079
2-4 a.m. 592 3,048
4-6 a.m. 110 2,556
6-8 a.m. 504 8,138
8-10 a.m. 1,674 43,190
10-12 a.m. 3,461 78,892
12-2 p.m. 4,099 97,911
2-4 p.m. 4,391 132,865
4-6 p.m. 3,628 98,118
6-8 p.m. 1,847 49,254
8-10 p.m. 1,432 32,695
10-12 p.m. 955 24,301
__________ _____________ _________________
Total: 23,333 578,047
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 269
Davis 567
Irvine 12
Los Angeles 71
Riverside 110
San Diego 72
San Francisco 20
Santa Barbara 32
Santa Cruz 67
Lawrence Berkeley 0
Lawrence Livermore 1
Los Alamos 0
MELWEB 0
Searchlight 1,590
Other - UC 20,246
Other-Network UC 276
_____
23,333
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 4,378
Davis 11,193
Irvine 15
Los Angeles 1,480
Riverside 1,492
San Diego 660
San Francisco 1,149
Santa Barbara 624
Santa Cruz 1,059
Lawrence Berkeley 0
Lawrence Livermore 36
Los Alamos 0
MELWEB 0
Searchlight 0
Other - UC 544,956
Other-Network UC 11,005
_____
578,047
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 3.0
Standard deviation in seconds 10.9
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.3
Standard deviation in seconds 1.6
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 22:02
Average session length (minutes:seconds) 21:10
Longest session recorded (minutes:seconds) 175:16
Average number of searches completed per session 0.0
Retrievals per search - median 7.0
Retrievals per search - average 817.3
Retrievals per search - standard deviation 8374.2
Percent of searches completed with 0 results 23.2%
Percent of searches entered that are long 0.2%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 23,333 13.8%
PRESENT 136,598 80.7%
INIT or CLOSE 8,791 5.2%
OTHER 536 0.3%
SEARCHes completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. SEARCHes No. Index Median Avg. Dev.
______ _________ ______ _______ ______ __________ _______
By index:
PERSONAL AUTHOR 6,576 19.6% 1,254 19.1% 9 118.1 1654.5
TITLE WORD 3,917 11.7% 2,010 51.3% 3 305.5 2427.8
EXACT TITLE 227 0.7% 129 56.8% 1 70.1 298.1
KEYWORD 13,679 40.9% 2,285 16.7% 22 1103.6 8799.6
JOURNAL 1,345 4.0% 512 38.1% 5 2475.5 13771.2
EXACT JOURNAL 299 0.9% 119 39.8% 20 1343.9 3269.8
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 5 0.0% 4 80.0% 101 101.0 0.0
BIOSYS NAMES 8 0.0% 6 75.0% 97 97.0 94.8
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 56 0.2% 5 8.9% 29 253.4 692.4
MAJ CONCEPT CDES 4 0.0% 0 0.0% 15,564 88062.5 155694
CONCEPT CODES 6 0.0% 0 0.0% 283 35179.0 65794.3
PUBLICATION TYPE 85 0.3% 12 14.1% 23 245.7 681.8
DATE 99 0.3% 13 13.1% 10 51.0 127.1
LANGUAGE 48 0.1% 6 12.5% 38 265.4 585.1
ADDED 1,668 5.0% 1,500 89.9% 4 14.0 36.1
AUTHOR AFFIL. 94 0.3% 33 35.1% 14 49.7 102.8
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 2 0.0% 2 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 10 0.0% 2 20.0% 19 300.3 520.3
AT 283 0.8% 79 27.9% 10 227.1 731.1
Other indexes 5,051 15.1% 948 18.8% 20 1600.2 12092.0
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. SEARCHes No. Index Median Avg. Dev.
______ _________ ______ _______ ______ __________ _______
By number of indexes:
Multiple 7,815 33.5% 2,854 36.5% 7 624.2 5313.2
Single 15,518 66.5% 2,561 16.5% 23 1232.7 10724.5
PRESENT commands, by type:
MARC 53.7%
OPAC 30.7%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)